Wastewater treatment system of concrete mixing plant

Abstract

The present invention provides a sewage treatment system for a concrete mixing station, which belongs to the technical field of sewage treatment systems, and includes a sewage treatment component, a supporting component, a lifting shaft, two connecting components, a connecting component, a connecting pipe, a limiting component, a water outlet pipe and an opening and closing valve. The sewage treatment component is provided with a sedimentation tank. The supporting component is slidably inserted into the sedimentation tank. The lifting shaft is fixedly arranged on the supporting component, and the lifting shaft is provided with an external thread. The connecting component includes a telescopic component, and the telescopic component has a piston rod. The connecting component is fixedly connected to both piston rods. The connecting pipe is sleeved outside the lifting shaft and is provided with a first internal thread, and the connecting pipe is inserted into the connecting component. The limiting component is located on the connecting component and is fixedly connected to the connecting pipe. One end of the water outlet pipe is fixedly connected to the sewage treatment component and communicates with the sedimentation tank. The opening and closing valve is arranged at the other end of the water outlet pipe. The sewage treatment system for a concrete mixing station provided by the present invention can avoid the problem that the sludge is located at the bottom of the sedimentation tank, so it is more laborious to clean up.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment systems, and more specifically, relates to a sewage treatment system for a concrete mixing station. Background Art

[0002] Concrete mixing plants generate large amounts of wastewater during production. To conserve water and energy, this wastewater needs to be recycled. After solid-liquid separation, the separated liquid is introduced into a sedimentation tank for sedimentation, and the supernatant is recycled. Suspended matter in the wastewater settles to the bottom of the sedimentation tank, forming sludge. During the use of the sedimentation tank, the sludge at the bottom of the sedimentation tank needs to be cleaned regularly. Since the sludge is located at the bottom of the sedimentation tank, cleaning it is relatively laborious. Summary of the Invention

[0003] The object of the present invention is to provide a sewage treatment system for a concrete mixing plant, aiming to solve the problem that the sludge is located at the bottom of the sedimentation tank and is therefore difficult to clean.

[0004] To achieve the above-mentioned objectives, the present invention adopts a technical solution: providing a sewage treatment system for a concrete mixing plant, comprising a sewage treatment component, a supporting component, a lifting shaft, two connecting assemblies, a connecting component, a connecting pipe, a limiting member, an outlet pipe, and an on-off valve. The sewage treatment component is fixed to the ground and is provided with a sedimentation tank. The supporting component slides vertically through the sedimentation tank and abuts against the bottom wall of the sedimentation tank. The lifting shaft is vertically arranged and fixed to the supporting component, and the upper end of the lifting shaft is provided with an external thread. Two connecting assemblies are symmetrically arranged on either side of the sewage treatment component, each including a telescopic assembly having a piston rod that can be extended and retracted vertically. The connecting component is fixedly connected to the piston rods of both telescopic assemblies. The connecting pipe is sleeved on the outer end of the lifting shaft and is provided with a first internal thread that is threadedly connected to the external thread. The connecting pipe can be rotatably inserted into the connecting component. The limiting member is located on the connecting component and is fixedly connected to the connecting pipe. The water outlet pipe is arranged horizontally, one end of the water outlet pipe is fixedly connected to the sewage treatment component and communicated with the sedimentation tank. An on-off valve is arranged at the other end of the water outlet pipe.

[0005] In one possible implementation, the connecting assembly further includes a slide rail and a slider. The slide rail is horizontally disposed and fixed to the ground. The slider slides on the slide rail. The sewage treatment system of the concrete mixing plant further includes a power vehicle, a fixed plate, and a sliding shaft. The power vehicle is configured to move along the length of the slide rail. The fixed plate is horizontally disposed and fixedly connected to the power vehicle. The sliding shafts are multiple vertically disposed and fixedly connected to the connecting member, and the sliding shafts slide through the fixed plate. The telescopic assembly is fixedly mounted on the slider.

[0006] In one possible implementation, the sedimentation tank is a cylindrical structure with its axis vertically arranged. The sewage treatment system of the concrete mixing plant further includes a protective pipe and a locking unit. The protective pipe is located on the sewage treatment unit and is coaxial with the sedimentation tank. The inner diameter of the protective pipe is equal to the diameter of the sedimentation tank. Multiple locking units are provided, and when the supporting member slides into the protective pipe, the locking units can lock the protective pipe to the supporting member.

[0007] In one possible implementation, the locking unit includes a docking post, a docking tube, a connecting shaft, a sliding plate, and a connecting bolt. The docking post is vertically arranged and fixed on the supporting member, and the docking post is provided with a threaded hole with the axis horizontally arranged. The docking tube is horizontally arranged, one end of the docking tube is fixedly connected to the sewage treatment member, and a second internal thread is provided in the docking tube. The connecting shaft is parallel to the docking tube, and one end of the connecting shaft is connected to the protective tube. The sliding plate is sleeved on the connecting shaft, and the sliding plate has the freedom to slide and rotate. The screw of the connecting bolt is passed through the sliding plate, and the screw of the connecting bolt is passed through the docking tube and is threadedly connected to the second internal thread. Wherein, when the screw of the connecting bolt exits the docking tube and the supporting member slides into the protective tube, the rotation and sliding of the sliding plate can cause the screw of the connecting bolt to be threadedly connected to the threaded hole.

[0008] In one possible implementation, the wastewater treatment system of the concrete mixing plant further includes multiple fixed blocks and a steering ring. The multiple fixed blocks are evenly distributed around the circumference of the protective tube, and the fixed blocks are fixedly mounted on the outer surface of the protective tube. The steering ring is an annular structure, coaxially mounted outside the protective tube, and rotatably inserted through all of the fixed blocks. The steering ring is fixedly connected to one end of each of the connecting shafts for connection to the protective tube.

[0009] In one possible implementation, the sewage treatment system of the concrete mixing station also includes a stirring pipe, a plurality of stirring blades, two fixed rings, a drive motor and two meshing gears. The stirring pipe is vertically arranged and can rotate to penetrate the connecting piece. A plurality of stirring blades are evenly distributed around the circumference of the stirring pipe, and the stirring blades are fixedly connected to the stirring pipe. Two fixed rings are both sleeved and fixed on the outside of the stirring pipe, and the two fixed rings are respectively fitted with the upper surface and the lower surface of the connecting piece. The driving motor is fixed on the connecting piece. Two meshing gears are respectively sleeved and fixed on the output shaft of the driving motor and the outside of the stirring pipe. Wherein, when the connecting pipe is disconnected from the threaded connection of the pulling shaft, the movement of the connecting piece in the vertical direction and the movement of the connecting piece along the length direction of the slide rail can make the stirring pipe sleeved outside the pulling shaft and the plurality of stirring blades located in the sedimentation tank.

[0010] In one possible implementation, the wastewater treatment system of the concrete mixing plant further includes a sealing ring. The sealing ring is sleeved and fixed to the outside of the lifting shaft. The sidewall of the mixing tube has multiple spray holes, evenly distributed around the circumference of the mixing tube. The mixing tube can be slidably sleeved outside the sealing ring. In this case, the multiple mixing blades are located in the sedimentation tank, and the multiple spray holes are located above the sealing ring.

[0011] In one possible implementation, the sewage treatment system of the concrete mixing station further includes a liquid inlet pipe and a fixing member. The liquid inlet pipe is disposed within the mixing pipe. The fixing member is fixed to the connecting member and is fixedly connected to the liquid inlet pipe.

[0012] In a possible implementation, the limiting member is a hexagonal prism structure.

[0013] In a possible implementation, the side wall of the connecting shaft has an outwardly protruding anti-slip portion, and the anti-slip portion is located on a side of the sliding plate away from the protective tube.

[0014] In an embodiment of the present application, after the sewage has been standing in the sedimentation tank for a period of time, the on-off valve is opened, and the supernatant in the sedimentation tank flows out from the outlet pipe. The sludge in the sedimentation tank falls on the supporting member. When the sludge in the sedimentation tank needs to be cleaned, the piston rod of the telescopic assembly drives the connecting member to move upward, and the connecting member supports the limit member to move upward. Since the connecting pipe is threadedly connected to the lifting shaft and the limit member is fixedly connected to the connecting pipe, when the limit member moves upward, it will drive the lifting shaft to move upward, thereby driving the supporting member to slide upward until the supporting member reaches the top of the sewage treatment member, so that the sludge in the sedimentation tank is brought out of the sedimentation tank, thereby avoiding the problem of being difficult to clean up because the sludge is at the bottom of the sedimentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of a sewage treatment system for a concrete mixing plant according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of local A in FIG;

[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of the local B in FIG;

[0019] Figure 4 for Figure 1 Schematic diagram of the enlarged structure of the local C in FIG;

[0020] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of the local D in FIG;

[0021] Figure 6 A schematic cross-sectional view of the sewage treatment system of a concrete mixing plant provided by an embodiment of the present invention, showing the sewage treatment components, supporting components, lifting shafts, connecting components, connecting pipes, and limiting components after connection;

[0022] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the local E in FIG;

[0023] Figure 8 for Figure 6 Schematic diagram of the enlarged structure of the local F in FIG;

[0024] Figure 9 A schematic diagram of the structure of the sewage treatment system of a concrete mixing plant provided by an embodiment of the present invention, wherein the supporting member, the lifting shaft, the locking unit, the fixing block, the steering ring, etc. are connected;

[0025] Figure 10 for Figure 9 Schematic diagram of the enlarged structure of local G in .

[0026] Figure: 1, sewage treatment unit; 11, sedimentation tank; 2, support member; 3, lifting shaft; 4, connecting assembly; 41, telescopic assembly; 42, slide rail; 43, slider; 5, connecting member; 6, connecting pipe; 7, limit member; 8, water outlet pipe; 9, opening and closing valve; 10, power car; 110, fixing plate; 120, sliding shaft; 130, protective pipe; 1401, docking column; 14011, threaded hole; 1402 , butt joint; 1403, connecting shaft; 14031, anti-slip part; 1404, sliding plate; 1405, connecting bolt; 150, fixing block; 160, steering ring; 170, stirring tube; 1701, spray hole; 180, stirring blade; 190, fixing ring; 200, driving motor; 210, gear; 220, sealing ring; 230, liquid inlet pipe; 240, fixing part; 250, filter. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be further explained that the drawings and implementation methods of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0029] When an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] The directions or positional relationships indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0032] Please also refer to Figure 1 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8The sewage treatment system for a concrete mixing plant provided by the present invention will now be described. The sewage treatment system comprises a sewage treatment unit 1, a support unit 2, a lifting shaft 3, two connecting assemblies 4, a connecting member 5, a connecting pipe 6, a stopper 7, an outlet pipe 8, and an on-off valve 9. The sewage treatment unit 1 is fixed to the ground and includes a sedimentation tank 11. The supporting member 2 slides vertically through the sedimentation tank 11 and abuts against the bottom wall of the sedimentation tank 11. The lifting shaft 3 is vertically arranged and fixed to the supporting member 2, with an external thread on its upper end. Two connecting assemblies 4 are symmetrically arranged on either side of the sewage treatment unit 1. Each connecting assembly 4 includes a telescopic assembly 41 having a piston rod that can extend and retract vertically. The connecting member 5 is fixedly connected to the piston rods of both telescopic assemblies 41. The connecting pipe 6 is sleeved around the upper end of the lifting shaft 3 and has a first internal thread that is threadedly connected to the external thread. The connecting pipe 6 is rotatably inserted into the connecting member 5. The stopper 7 is located on the connector 5 and is fixedly connected to the connecting pipe 6. The outlet pipe 8 is arranged horizontally, one end of which is fixedly connected to the sewage treatment unit 1 and communicates with the sedimentation tank 11. The on-off valve 9 is provided at the other end of the outlet pipe 8.

[0033] Compared with the prior art, the sewage treatment system of the concrete mixing station provided by the present invention is that after the sewage has been stationary in the sedimentation tank 11 for a period of time, the on-off valve 9 is opened, and the supernatant in the sedimentation tank 11 flows out from the outlet pipe 8. The sludge in the sedimentation tank 11 falls on the supporting member 2. When the sludge in the sedimentation tank 11 needs to be cleaned, the piston rod of the telescopic assembly 41 drives the connecting member 5 to move upward, and the connecting member 5 supports the limit member 7 to move upward. Since the connecting pipe 6 is threadedly connected to the lifting shaft 3 and the limit member 7 is fixedly connected to the connecting pipe 6, when the limit member 7 moves upward, it will drive the lifting shaft 3 to move upward, thereby driving the supporting member 2 to slide upward until the supporting member 2 reaches the top of the sewage treatment member 1, thereby bringing the sludge in the sedimentation tank 11 out of the sedimentation tank 11, thereby avoiding the problem of the sludge being located at the bottom of the sedimentation tank 11 and being difficult to clean.

[0034] In this embodiment, the telescopic assembly 41 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. The sidewall of the sewage treatment unit 1 is provided with a hole for communicating with the outlet pipe 8. A filter 250 is fixed within the hole to prevent impurities in the sewage from entering the outlet pipe 8. The connecting pipe 6 is capable of sliding upward.

[0035] In some embodiments, see Figure 1, the connecting component 4 also includes a slide rail 42 and a slider 43. The slide rail 42 is horizontally arranged and fixed on the ground. The slider 43 is slidably arranged on the slide rail 42. The sewage treatment system of the concrete mixing plant also includes a power car 10, a fixed plate 110 and a sliding shaft 120. The power car 10 is used to move along the length direction of the slide rail 42. The fixed plate 110 is horizontally arranged and fixedly connected to the power car 10. The sliding shaft 120 is a plurality of sliding shafts 120 vertically arranged and fixedly connected to the connecting member 5, and the sliding shaft 120 is slidably passed through the fixed plate 110. Among them, the telescopic component 41 is fixed on the slider 43. When the piston rod of the telescopic component 41 drives the connecting member 5 to move in the vertical direction, relative sliding will also occur between the sliding shaft 120 and the fixed plate 110. When the supporting member 2 reaches the top of the sewage treatment member 1, the power vehicle 10 moves along the length direction of the slide rail 42, so that the supporting member 2, the connecting member 5, etc. move with the power vehicle 10 until the supporting member 2 is driven to a suitable position and then the sludge on the supporting member 2 is processed. During this process, the telescopic assembly 41 slides with the slider 43.

[0036] In some embodiments, see Figure 1 The sedimentation tank 11 is a cylindrical structure with its axis vertically arranged. The sewage treatment system of the concrete mixing plant also includes a protective pipe 130 and a locking unit. The protective pipe 130 is located on the sewage treatment component 1 and is coaxially arranged with the sedimentation tank 11. The inner diameter of the protective pipe 130 is equal to the diameter of the sedimentation tank 11. There are multiple locking units. When the supporting member 2 slides into the protective pipe 130, the locking unit can lock the protective pipe 130 with the supporting member 2. Since the protective pipe 130 is coaxially arranged with the sedimentation tank 11 and the inner diameter of the protective pipe 130 is equal to the diameter of the sedimentation tank 11, the supporting member 2 can slide upward to penetrate into the protective pipe 130. When the supporting member 2 slides into the protective pipe 130, the locking unit locks the protective pipe 130 with the supporting member 2. At this time, the protective pipe 130 can move with the supporting member 2 along with the supporting member 2, so that when the supporting member 2 is brought to the appropriate position, the protective pipe 130 can prevent the sludge on the supporting member 2 from falling. In this embodiment, when the supporting member 2 reaches the end position, the connection between the supporting member 2 and the protection tube 130 can be disconnected, and then the supporting member 2 can be slid out of the protection tube 130 before the sludge on the supporting member 2 is processed.

[0037] In some embodiments, the feature locking unit may be implemented as follows: Figure 1 、 Figure 2 、 Figure 5 、 Figure 9 and Figure 10 See the structure shown. Figure 1 、 Figure 2 、 Figure 5 、 Figure 9 and Figure 10The locking unit includes a docking column 1401, a docking tube 1402, a connecting shaft 1403, a sliding plate 1404 and a connecting bolt 1405. The docking column 1401 is vertically arranged and fixed on the supporting member 2. The docking column 1401 is provided with a threaded hole 14011 with the axis horizontally arranged. The docking tube 1402 is horizontally arranged, one end of the docking tube 1402 is fixedly connected to the sewage treatment component 1, and a second internal thread is provided in the docking tube 1402. The connecting shaft 1403 is parallel to the docking tube 1402, and one end of the connecting shaft 1403 is connected to the protective tube 130. The sliding plate 1404 is sleeved on the connecting shaft 1403, and the sliding plate 1404 has the freedom of sliding and rotating. The screw of the connecting bolt 1405 is passed through the sliding plate 1404, and the screw of the connecting bolt 1405 is passed through the docking tube 1402 and is threadedly connected to the second internal thread. When the screw of connecting bolt 1405 exits docking tube 1402 and supporting member 2 slides into protective tube 130, the rotation and sliding of sliding plate 1404 enable the screw of connecting bolt 1405 to be threadedly connected to threaded hole 14011. When the screw of connecting bolt 1405 is inserted into docking tube 1402 and is threadedly connected to the second internal thread, the head of connecting bolt 1405 cooperates with docking tube 1402 to clamp sliding plate 1404, thereby limiting the horizontal and upward movement of protective tube 130, thereby allowing supporting member 2 to slide smoothly into protective tube 130. When the screw of connecting bolt 1405 is threadedly connected to threaded hole 14011, it can limit the supporting member 2 from further sliding in the vertical direction, thereby locking the supporting member 2 and protective tube 130 together. In this embodiment, when the supporting member 2 slides into the protection tube 130 , the threaded hole 14011 may be located above the protection tube 130 and the connecting shaft 1403 .

[0038] In some embodiments, see Figure 9 and Figure 10 The sewage treatment system of the concrete mixing plant also includes multiple fixed blocks 150 and a steering ring 160. The multiple fixed blocks 150 are evenly distributed around the circumference of the protective tube 130 and are fixed to the outer surface of the protective tube 130. The steering ring 160 is an annular structure, coaxially sleeved outside the protective tube 130 and rotatably inserted into all the fixed blocks 150. The steering ring 160 is fixedly connected to one end of each connecting shaft 1403 for connection to the protective tube 130. During the insertion of the support member 2 into the protective tube 130, the screw of the connecting bolt 1405 may not be threaded into the threaded hole 14011 due to factors such as the rotation of the support member 2. In this case, the screw of the connecting bolt 1405 can be threaded into the threaded hole 14011 by rotating the steering ring 160. In this embodiment, the connecting shaft 1403 is indirectly connected to the protective tube 130 via the fixed blocks 150 and the steering ring 160.

[0039] In some embodiments, see Figure 1 The sewage treatment system of the concrete mixing station also includes a stirring tube 170, a plurality of stirring blades 180, two fixed rings 190, a drive motor 200 and two meshing gears 210. The stirring tube 170 is arranged vertically and can rotate to penetrate the connecting piece 5. The plurality of stirring blades 180 are evenly distributed around the circumference of the stirring tube 170, and the stirring blades 180 are fixedly connected to the stirring tube 170. The two fixed rings 190 are both sleeved and fixed on the outside of the stirring tube 170, and the two fixed rings 190 are respectively fitted with the upper surface and the lower surface of the connecting piece 5. The drive motor 200 is fixed on the connecting piece 5. The two meshing gears 210 are respectively sleeved and fixed on the output shaft of the drive motor 200 and the outside of the stirring tube 170. When the connecting tube 6 is disconnected from the lifting shaft 3 by threaded connection, the vertical movement of the connecting member 5 and the longitudinal movement of the connecting member 5 along the slide rail 42 enable the stirring tube 170 to be sleeved outside the lifting shaft 3 and the plurality of stirring blades 180 to be located within the sedimentation tank 11. The two fixing rings 190 can limit the vertical movement of the stirring tube 170, and the drive motor 200 can drive the stirring tube 170 to rotate via two meshing gears 210. In the prior art, flocculant is added to the sedimentation tank 11. In this embodiment, after flocculant is added to the sedimentation tank 11, the threaded connection between the connecting pipe 6 and the pulling shaft 3 is disconnected, and then the connecting part 5 is driven to move in the vertical direction and the length direction of the slide rail 42 through the telescopic assembly 41 and the power vehicle 10, so that the stirring pipe 170 is sleeved on the outside of the pulling shaft 3. At this time, multiple stirring blades 180 are located in the sedimentation tank 11, and then the driving motor 200 drives the stirring pipe 170 to rotate, so that the sewage and flocculant are fully mixed under the stirring of the stirring blades 180.

[0040] In some embodiments, see Figure 1 、 Figure 4 and Figure 9 The sewage treatment system of the concrete mixing station also includes a sealing ring 220. The sealing ring 220 is fixedly mounted on the outside of the lifting shaft 3. The side wall of the stirring tube 170 has a plurality of spray holes 1701, which are evenly distributed around the circumference of the stirring tube 170. The stirring tube 170 can be slidably mounted on the outside of the sealing ring 220. At this time, the plurality of stirring blades 180 are located in the sedimentation tank 11, and the plurality of spray holes 1701 are located above the sealing ring 220. When the stirring tube 170 is slidably mounted on the outside of the sealing ring 220, a gap is formed between the stirring tube 170 and the lifting shaft 3, and flocculant can be injected into the stirring tube 170. The sealing ring 220 prevents the flocculant from falling directly into the sedimentation tank 11, but instead allows the flocculant to be sprayed in multiple directions through the plurality of spray holes 1701. In this way, under the stirring of the stirring blades 180, the flocculant is more easily mixed with the sewage in the sedimentation tank 11.

[0041] In some embodiments, see Figure 1 The sewage treatment system of the concrete mixing station also includes an inlet pipe 230 and a fixing member 240. The inlet pipe 230 is disposed within the mixing tube 170. The fixing member 240 is fixed to the connecting member 5 and is fixedly connected to the inlet pipe 230. The inlet pipe 230 is fixed to the connecting member 5 via the fixing member 240. When the mixing tube 170 rotates, flocculant can be injected into the mixing tube 170 through the inlet pipe 230. Since the inlet pipe 230 is always stationary, flocculant injection is relatively convenient. The flocculants used in the present invention are all liquid flocculants.

[0042] In some embodiments, see Figure 1 The limiting member 7 is a hexagonal prism structure. In this way, the limiting member 7 can be driven to rotate by using a wrench to rotate equidistantly, thereby driving the connecting pipe 6 to rotate.

[0043] In some embodiments, see Figure 5 The side wall of the connecting shaft 1403 has an outwardly protruding anti-slip portion 14031, which is located on the side of the sliding plate 1404 away from the protection tube 130. The anti-slip portion 14031 can prevent the sliding plate 1404 from sliding off the connecting shaft 1403.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The sewage treatment system of the concrete mixing plant is characterized by: include: A sewage treatment unit is fixed on the ground, and the sewage treatment unit is provided with a sedimentation tank, and the sedimentation tank is a cylindrical structure with a vertical axis; A supporting member is slidably disposed in the sedimentation tank in a vertical direction and abuts against the bottom wall of the sedimentation tank; A lifting shaft, which is vertically arranged and fixed on the supporting member, and an upper end of the lifting shaft is provided with an external thread; Two connecting assemblies are symmetrically arranged on both sides of the sewage treatment component, and the connecting assemblies include telescopic assemblies, and the telescopic assemblies have piston rods that can be telescoped in a vertical direction; A connecting piece, fixedly connected to the piston rods of the two telescopic assemblies; A connecting pipe, which is sleeved outside the upper end of the lifting shaft and is provided with a first internal thread threadedly connected to the external thread, and the connecting pipe can be rotatably passed through the connecting piece; A limiting member, located on the connecting member and fixedly connected to the connecting pipe; A water outlet pipe is arranged horizontally, one end of which is fixedly connected to the sewage treatment component and communicated with the sedimentation tank; and An on-off valve is provided at the other end of the water outlet pipe; A protection pipe, located on the sewage treatment unit and coaxially arranged with the sedimentation tank, wherein the inner diameter of the protection pipe is equal to the diameter of the sedimentation tank; There are multiple locking units, and when the supporting member slides into the protection tube, the locking units can lock the protection tube and the supporting member; The connection component also includes: The slide rail is arranged horizontally and fixed on the ground; A slider, slidably disposed on the slide rail; Wherein, the telescopic assembly is fixed on the slider; The locking unit comprises: A docking post, which is vertically arranged and fixed on the supporting member, and a threaded hole with a horizontal axis is provided on the docking post; A butt joint pipe is arranged horizontally, one end of which is fixedly connected to the sewage treatment component, and a second internal thread is arranged in the butt joint pipe; A connecting shaft, parallel to the butt joint; A sliding plate, sleeved on the connecting shaft, the sliding plate having the freedom of sliding and rotating; A connecting bolt, the screw rod of which is inserted into the sliding plate, the screw rod of which is inserted into the butt joint tube and is threadedly connected with the second internal thread; When the screw rod of the connecting bolt exits the docking tube and the supporting member slides into the protective tube, the rotation and sliding of the sliding plate can cause the screw rod of the connecting bolt to be threadedly connected to the threaded hole.

2. The sewage treatment system of a concrete mixing plant according to claim 1, characterized in that: Also includes: A stirring tube, which is vertically arranged and rotatably penetrates the connecting piece; A plurality of stirring blades are evenly distributed around the circumference of the stirring tube, and the stirring blades are fixedly connected to the stirring tube; Two fixing rings are both sleeved and fixed on the outside of the stirring tube, and the two fixing rings are respectively fitted with the upper surface and the lower surface of the connecting piece; A driving motor is fixed on the connecting member; Two meshing gears are respectively sleeved and fixed on the output shaft of the driving motor and the outside of the stirring tube; Among them, when the threaded connection between the connecting pipe and the lifting shaft is disconnected, the movement of the connecting piece along the vertical direction and the movement of the connecting piece along the length direction of the slide rail can make the stirring pipe sleeve outside the lifting shaft and the multiple stirring blades be located in the sedimentation tank.

3. The sewage treatment system of a concrete mixing plant according to claim 2, characterized in that: Also includes: A sealing ring, sleeved and fixed outside the lifting shaft; Among them, the side wall of the stirring tube has a plurality of spray holes, and the plurality of spray holes are evenly distributed around the circumference of the stirring tube. The stirring tube can be slidably mounted outside the sealing ring. At this time, the plurality of stirring blades are located in the sedimentation tank, and the plurality of spray holes are located above the sealing ring.

4. The sewage treatment system of a concrete mixing plant according to claim 3, characterized in that: Also includes: A liquid inlet pipe, which is inserted into the stirring tube; A fixing member is fixedly arranged on the connecting member, and the fixing member is fixedly connected to the liquid inlet pipe.

5. The sewage treatment system of a concrete mixing plant according to claim 1, characterized in that: The limiting member is in a hexagonal column structure.

6. The sewage treatment system of a concrete mixing plant according to claim 1, characterized in that: The side wall of the connecting shaft has an anti-slip portion protruding outwards, and the anti-slip portion is located at a side of the sliding plate away from the protection tube.

7. The sewage treatment system of a concrete mixing plant according to claim 1, characterized in that: Also includes: a power car for moving along the length of the slide rail; A fixed plate, arranged horizontally and fixedly connected to the power vehicle; There are multiple sliding shafts, which are vertically arranged and fixedly connected to the connecting member, and the sliding shafts are slidably inserted into the fixing plate.

8. The sewage treatment system of a concrete mixing plant according to claim 1, characterized in that: Also includes: A plurality of fixing blocks are evenly distributed around the circumference of the protection tube, and the fixing blocks are fixedly arranged on the outer side surface of the protection tube; The steering ring is in a circular ring structure. The steering ring is coaxially sleeved outside the protective tube. The steering ring can be rotatably passed through all the fixed blocks. The steering ring is fixedly connected to one end of all the connecting shafts. The connecting shaft is indirectly connected to the protective tube through the fixed block and the steering ring.

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